Maria, go to the ACE website. They have awesome custormer service. And during their available hours, you can ask an actual person questions online about their cert prep options. They have live workshops and online materials and packages for home study.
And if you have questions and want some guidance, contact me through my profile or website (www.hawaiifitnessacademy.com). I will give you three free email mentoring interactions to assist you in getting started.
Be aggressive in pursuing your education. Grow your passion for fitness and working with people that need your help.